1263361262040 has 96 divisors (see below), whose sum is σ = 4152058185600. Its totient is φ = 333110976000.

The previous prime is 1263361261991. The next prime is 1263361262087. The reversal of 1263361262040 is 402621633621.

1263361262040 is a `hidden beast` number, since 1 + 2 + 6 + 33 + 612 + 6 + 2 + 0 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1263361261986 and 1263361262004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19683336 + ... + 19747415.

It is an arithmetic number, because the mean of its divisors is an integer number (43250606100).

Almost surely, 2^{1263361262040} is an apocalyptic number.

1263361262040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1263361262040 is an abundant number, since it is smaller than the sum of its proper divisors (2888696923560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1263361262040 is a wasteful number, since it uses less digits than its factorization.

1263361262040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39430857 (or 39430850 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

Adding to 1263361262040 its reverse (402621633621), we get a palindrome (1665982895661).

The spelling of 1263361262040 in words is "one trillion, two hundred sixty-three billion, three hundred sixty-one million, two hundred sixty-two thousand, forty".